Merged revisions 287269-287271 via svnmerge from

https://origsvn.digium.com/svn/asterisk/branches/1.8

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  r287269 | pitel | 2010-09-17 10:37:49 +0200 (Pá, 17 zář 2010) | 8 lines
  
  Support for HTTP redirects in calendar's URL
  
  libneon does not support HTTP redirects (3xx responses) by default. You must tell it to follow them.
  Also, another little unsigned int fix.
  
  (closes issue #17776)
  Review: https://reviewboard.asterisk.org/r/921/
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  r287270 | pitel | 2010-09-17 10:42:37 +0200 (Pá, 17 zář 2010) | 6 lines
  
  Asterisk crashing because of double free when EWS request fails
  
  The free is done later in code. I think ast_free() should have built in checks for double free.
  
  (closes issue #17782)
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  r287271 | pitel | 2010-09-17 10:44:28 +0200 (Pá, 17 zář 2010) | 6 lines
  
  Events are visible after they were removed from EWS calendar
  
  Because we must merge calendar even when it's empty.
  
  (closes issue #17786)
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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@287272 65c4cc65-6c06-0410-ace0-fbb531ad65f3